Which description best fits a physical change?

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Study for the Abeka Science Matter and Energy Test 7. Enhance your knowledge with flashcards and multiple-choice questions, each with explanations. Get ready for academic success!

Multiple Choice

Which description best fits a physical change?

Explanation:
Physical changes involve changes in form or state without forming a new substance. The composition stays the same before and after the change, so no new substance is produced. For example, melting ice into water or cutting a piece of metal changes appearance or size, but the material remains the same substance. The idea that energy must be released isn’t true for all physical changes, since some (like melting) require energy input, while others may release energy. The key point is that a physical change does not alter the substance’s identity or chemical composition.

Physical changes involve changes in form or state without forming a new substance. The composition stays the same before and after the change, so no new substance is produced. For example, melting ice into water or cutting a piece of metal changes appearance or size, but the material remains the same substance. The idea that energy must be released isn’t true for all physical changes, since some (like melting) require energy input, while others may release energy. The key point is that a physical change does not alter the substance’s identity or chemical composition.

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